Mildly displaced and angulated transverse fracture of the left proximal humeral shaft. Site of fracture and the subtle impression of an underlying lucent lesion suggests pathological fracture. Additionally, there is lytic destruction and soft-tissue mass associated with the left 4th rib laterally, lysis of the upper aspect of the left 7th rib, and possible pulmonary mass superimposed over the left first costal cartilage. Overall appearance suggests left upper lobe lung cancer with osseous metastases and pathological humerus fracture.